GM Service Manual Online
For 1990-2009 cars only

Roof and Door Module (RDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, Vehicle in PARK, Folding Top Closed, Windows Closed, Rear Compartment Closed

Battery Voltage Signal 1

Data

Volts

B+

Battery Voltage Signal 2

Data

Volts

B+

8 Digit GM Part Number

ID Information

Numerical

XXXX

Front Tonneau Status

Inputs

Active/Retracted/ Extended/ Invalid

Retracted

Folding Top Cyl. Extended Sen.

Data

Volts

0.35-1.33 Volts

Folding Top Cyl. Retracted Sen.

Data

Volts

2.30-4.04 Volts

Header Latch Motor

Data

Amps

0.00 amps

Header Over Center Latch Switch

Inputs

Active / Inactive

Active

Header Latch Switch

Inputs

Transition / Released / Latched / Invalid

Latched

Header Motor Command

Outputs

Idle / Unlatched/ Latched/ Invalid

Idle

Ignition On

Data

Yes / No

Yes

Ignition Voltage Signal

Data

Volts

Varies

Julian Date of Build

ID Information

Numerical

XXXX

Module Over Current Detected

Inputs

Yes / No

No

Pump Motor Command

Outputs

Idle / Forward/ Reverse/ Invalid

Idle

Rear Compartment Lid Ajar

Inputs

Ajar / Closed

Closed

Roof Close Cycle Counter

Data

Counts

varies

Roof Dowel Pin Switch

Inputs

Engaged/Disengaged

Engaged

Roof Open Cycle Counter

Data

Counts

varies

Roof Panel State

Roof System Status

Roof Panel Position Unknown / Roof Up and Latched / Roof Up and Partially Latched / Roof Up and Unlatched / Roof Up and Dowel Pin Not Engaged / Roof Down / Both Roof cylinder up and Down Hall Sensors On

Roof Up and Latched

Roof System Status

Roof System Status

Roof Closed / Opening Windows / Unlatch Tonneau Panel / Overdrive Latch / Pause for Pump to Stop / Open Tonneau Panel / Overdrive Tonneau / Raise Flipper Door / Overdrive Flipper / Release Header Latch / Lower Top panels / Close Tonneau Pane / Latch Tonneau Panel / Roof Opened / Opening Windows / Unlatch Tonneau Panel / Overdrive Latch / Pause for Pump to Stop / Open Tonneau Panel / Overdrive Tonneau / Raise Top Panels / Retract Header Latch / Lower Flipper Door / Overdrive Flipper / Close Tonneau Pane / Latch Tonneau Panel / Close Windows

Roof Closed

Shift Lock Solenoid Status

Inputs

Lock/Unlock

Lock

Software Part Number

ID Information

Numerical

XXXX

Storage Latch Cyl. Retracted Left/Right Sen.

Data

Volts

2.30-4.04 Volts

Storage Lid Closed Left/Right Sensors

Data

Volts

0.82-1.80 Volts

Storage Lid Cyl. Extended Sen.

Data

Volts

2.30-4.04 Volts

Storage Lid Ext. Panel Extended Sen.

Data

Volts

2.30-4.04 Volts

Storage Lid Ext. Panel Retracetd Sen.

Data

Volts

0.35-1.33 Volts

Tonneau Cylinder Switch

Inputs

Active / Inactive

Inactive

Tonneau Latch Switch

Inputs

Latched / Unlatched

Latched

Tonneau Panel State

Roof System Status

Tonneau Panel Position Unknown / Tonneau Panel Down and Latched / Tonneau Panel Down and Partially Latched / Tonneau Panel Down and Unlatched / Tonneau Panel Up / Both Tonneau Up and Down Hall Sensors Active

Tonneau Panel Down and Latched

Tonneau Safety Switch

Inputs

Latched / Unlatched

Latched

Tonneau Striker Switch

Inputs

Active / Inactive

Active

Top Control Switch

Inputs

Idle / Top Open / Top Closed

Idle

Top Cylinder Switch

Inputs

Active / Extended / Retracted/ Invalid

Extended

Valve 1 Command

Outputs

Active / Inactive

Inactive

Valve 2 Command

Outputs

Active / Inactive

Inactive

Valve 3 Command

Outputs

Active / Inactive

Inactive

Valve 4 Command

Outputs

Active / Inactive

Inactive

Year Module Built

ID Information

Numerical

XXXX